Intestinal trefoil factor confers colonic epithelial resistance to apoptosis.

abstract：:Cytochrome c maturation in Escherichia coli requires the ccm operon, which encodes eight membrane proteins (CcmABCDEFGH). CcmE is a periplasmic heme chaperone that binds heme covalently and transfers it onto apocytochrome c in the presence of CcmF, CcmG, and CcmH. In this work we addressed the functions of the ccmABCD...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Schulz H,Fabianek RA,Pellicioli EC,Hennecke H,Thöny-Meyer L

更新日期：1999-05-25 00:00:00

abstract：:The gene for cytosolic phosphoenolpyruvate carboxykinase (GTP) [GTP:oxaloacetate carboxy-lyase (transphosphorylating), EC 4.1.1.32] from the rat was isolated from a recombinant library containing the rat genome in phage lambda Charon 4A. The isolated clone, lambda PCK1, contains the complete gene for phosphoenolpyruva...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yoo-Warren H,Monahan JE,Short J,Short H,Bruzel A,Wynshaw-Boris A,Meisner HM,Samols D,Hanson RW

更新日期：1983-06-01 00:00:00

abstract：:Loss of a whole chromosome 5 or a deletion of its long arm (5q) is a recurring abnormality in malignant myeloid neoplasms. To determine the location of genes on 5q that may be involved in leukemogenesis, we examined the deleted chromosome 5 homologs in a series of 135 patients with malignant myeloid diseases. By compa...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Le Beau MM,Espinosa R 3rd,Neuman WL,Stock W,Roulston D,Larson RA,Keinanen M,Westbrook CA

更新日期：1993-06-15 00:00:00

abstract：:Although the applicability of small subunit ribosomal RNA (16S rRNA) sequences for bacterial classification is now well accepted, the general use of these molecules has been hindered by the technical difficulty of obtaining their sequences. A protocol is described for rapidly generating large blocks of 16S rRNA sequen...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Lane DJ,Pace B,Olsen GJ,Stahl DA,Sogin ML,Pace NR

更新日期：1985-10-01 00:00:00

abstract：:The spatial organization of complex natural microbiomes is critical to understanding the interactions of the individual taxa that comprise a community. Although the revolution in DNA sequencing has provided an abundance of genomic-level information, the biogeography of microbiomes is almost entirely uncharted at the m...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Mark Welch JL,Rossetti BJ,Rieken CW,Dewhirst FE,Borisy GG

更新日期：2016-02-09 00:00:00

abstract：:Transforming growth factor beta (TGF-beta) causes growth arrest in most cell types. TGF-beta induces hypophosphorylation of retinoblastoma susceptibility gene 1 product (RB), which sequesters E2F factors needed for progression into S phase of the cell cycle, thereby leading to cell cycle arrest at G1. It is possible, ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Li JM,Hu PP,Shen X,Yu Y,Wang XF

更新日期：1997-05-13 00:00:00

abstract：:The cytochrome P-450 superfamily of enzymes catalyzes the oxidative metabolism of innumerable lipophilic compounds (e.g., drugs, carcinogens, steroids). Although the three-dimensional structure of a soluble bacterial P-450 (P-450cam) has been solved, little is known about the structures of the membrane-bound mammalian...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kronbach T,Larabee TM,Johnson EF

更新日期：1989-11-01 00:00:00

abstract：:F(o)F(1)-ATP synthase manufactures the energy "currency," ATP, of living cells. The soluble F(1) portion, called F(1)-ATPase, can act as a rotary motor, with ATP binding, hydrolysis, and product release, inducing a torque on the gamma-subunit. A coarse-grained plastic network model is used to show at a residue level o...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pu J,Karplus M

更新日期：2008-01-29 00:00:00

abstract：:Most studies of cytoskeletal organelles have concentrated on molecular analyses of abundant and biochemically accessible structures. In many of the classical cases, however, the nature of the system chosen has precluded a concurrent genetic analysis. The mitotic spindle of the yeast Saccharomyces cerevisiae is one exa...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pillus L,Solomon F

更新日期：1986-04-01 00:00:00

abstract：:The BCL2 protooncogene encodes an inner mitochondrial membrane protein that blocks programmed cell death. BCL2 was isolated from the chromosomal breakpoint of follicular B-cell lymphoma. Transgenic mice that overexpress BCL2 display extended survival of resting B cells. In this study we use a monospecific anti-human B...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hockenbery DM,Zutter M,Hickey W,Nahm M,Korsmeyer SJ

更新日期：1991-08-15 00:00:00

abstract：:There is pronounced seasonal plasticity in the morphology of the neural circuits that regulate song behavior in adult songbirds, primarily in response to changes in plasma testosterone (T) levels. Most song nuclei have androgen receptors. Afferent input from the telencephalic nucleus HVc (also known as the "high vocal...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Brenowitz EA,Lent K

更新日期：2002-09-17 00:00:00

abstract：:Treatment with neuraminidase (NA) plus galactose oxidase (GalOxase) does not cause stimulation of human thymocytes. However, stimulation can be achieved by addition of exogenous interleukin 2 (IL-2). The IL-2-induced stimulation was inhibited with anti-Tac antibody, indicating that NA/GalOxase-oxidized cells can serve...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Roffman E,Sredni B,Smolinsky A,Wilchek M

更新日期：1984-08-01 00:00:00

abstract：:Phosphorylation is a major mechanism regulating the activity of ion channels that remains poorly understood with respect to T-type calcium channels (Cav3). These channels are low voltage-activated calcium channels that play a key role in cellular excitability and various physiological functions. Their dysfunction has ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Blesneac I,Chemin J,Bidaud I,Huc-Brandt S,Vandermoere F,Lory P

更新日期：2015-11-03 00:00:00

abstract：:Peer review is the main institution responsible for the evaluation and gestation of scientific research. Although peer review is widely seen as vital to scientific evaluation, anecdotal evidence abounds of gatekeeping mistakes in leading journals, such as rejecting seminal contributions or accepting mediocre submissio...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Siler K,Lee K,Bero L

更新日期：2015-01-13 00:00:00

abstract：:Long interspersed nuclear elements 1 (L1) are active retrotransposons that reside in many species, including humans and rodents. L1 elements produce an RNA intermediate that is reverse transcribed to DNA and inserted in a new genomic location. We have tagged an active human L1 element (L1(RP)) with a gene encoding enh...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Prak ET,Dodson AW,Farkash EA,Kazazian HH Jr

更新日期：2003-02-18 00:00:00

abstract：:A new nondefective hybrid virus has been plaque-isolated from the Ad.2-SV40 hybrid population. This virus replicates efficiently with one-hit kinetics in both human embryonic kidney and African green monkey kidney cells, induces an SV40 specific antigen which is detectable by immunofluorescence and complement-fixation...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Lewis AM Jr,Levin MJ,Wiese WH,Crumpacker CS,Henry PH

更新日期：1969-08-01 00:00:00

abstract：:Rad51 is a core component of the eukaryotic homologous recombination machinery and is responsible for key mechanistic steps during strand invasion. Higher order oligomers of Rad51 display a remarkable degree of structural variation, forming rings, compressed filaments, and elongated filaments. It is unclear whether Ra...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Robertson RB,Moses DN,Kwon Y,Chan P,Chi P,Klein H,Sung P,Greene EC

更新日期：2009-08-04 00:00:00

abstract：:The mathematical theory of compressed sensing (CS) asserts that one can acquire signals from measurements whose rate is much lower than the total bandwidth. Whereas the CS theory is now well developed, challenges concerning hardware implementations of CS-based acquisition devices--especially in optics--have only start...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Studer V,Bobin J,Chahid M,Mousavi HS,Candes E,Dahan M

更新日期：2012-06-26 00:00:00

abstract：:Estimates of 21st Century global-mean surface temperature increase have generally been based on scenarios that do not include climate policies. Newly developed multigas mitigation scenarios, based on a wide range of modeling approaches and socioeconomic assumptions, now allow the assessment of possible impacts of clim...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Van Vuuren DP,Meinshausen M,Plattner GK,Joos F,Strassmann KM,Smith SJ,Wigley TM,Raper SC,Riahi K,de la Chesnaye F,den Elzen MG,Fujino J,Jiang K,Nakicenovic N,Paltsev S,Reilly JM

更新日期：2008-10-07 00:00:00

abstract：:The ATM gene is mutated in the syndrome of ataxia telangiectasia (AT), associated with neurologic dysfunction, growth abnormalities, and extreme radiosensitivity. Insulin-like growth factor-I receptor (IGF-IR) is a cell surface receptor with tyrosine kinase activity that can mediate mitogenesis, cell transformation, a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Peretz S,Jensen R,Baserga R,Glazer PM

更新日期：2001-02-13 00:00:00

abstract：:Two affinity species of the interleukin 2 (IL-2) receptor are different states of a single receptor molecule. We assumed that a binary complex between the IL-2 receptor and another lymphocyte-specific protein would constitute the high-affinity receptor. To test this assumption, we counted the numbers of IL-2 receptors...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kondo S,Shimizu A,Saito Y,Kinoshita M,Honjo T

更新日期：1986-12-01 00:00:00

abstract：:Previous studies have failed to detect an interaction between monomeric soluble CD4 (sCD4) and class II major histocompatibility complex (MHC) proteins, suggesting that oligomerization of CD4 on the cell surface may be required to form a stable class II MHC binding site. To test this possibility, we transfected the F4...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Sakihama T,Smolyar A,Reinherz EL

更新日期：1995-07-03 00:00:00

abstract：:In vitro assembly of tobacco mosaic virus (TMV) from its constituent RNA and protein occurs in two steps: formation of the initial complex by interaction of the 5'-end of TMV-RNA with 20S protein aggregate, and growth of the helical rod by sequential addition of protein subunits.Such a process was also observed in the...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ono T,Inoue H,Okada Y

更新日期：1972-12-01 00:00:00

abstract：:Many first-line cancer drugs are natural products or are derived from them by chemical modification. The trioxacarcins are an emerging class of molecules of microbial origin with potent antiproliferative effects, which may derive from their ability to covalently modify duplex DNA. All trioxacarcins appear to be deriva...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Švenda J,Hill N,Myers AG

更新日期：2011-04-26 00:00:00

abstract：:Point mutations in vascular smooth muscle α-actin (SM α-actin), encoded by the gene ACTA2, are the most prevalent cause of familial thoracic aortic aneurysms and dissections (TAAD). Here, we provide the first molecular characterization, to our knowledge, of the effect of the R258C mutation in SM α-actin, expressed wit...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Lu H,Fagnant PM,Bookwalter CS,Joel P,Trybus KM

更新日期：2015-08-04 00:00:00

abstract：:We studied the surface delivery pathways followed by newly synthesized plasma membrane proteins in intestinal cells. To this end, we developed an assay and characterized an epithelial cell line (SK-CO-15) derived from human colon adenocarcinoma. Polarized confluent monolayers (2000 omega.cm2), grown on polycarbonate f...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Le Bivic A,Real FX,Rodriguez-Boulan E

更新日期：1989-12-01 00:00:00

abstract：:By use of the indirect peroxidase-antiperoxidase complex immunocytochemical technique, antibody to purified human renal renin was applied to formalin-fixed paraffin sections of human cadaver brain. Immune reaction products were observed in most nerve cells in all areas of the brain examined; staining was limited to th...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Slater EE,Defendini R,Zimmerman EA

更新日期：1980-09-01 00:00:00

abstract：:A crucial step in recent theories of human origins is the emergence of strong pair-bonding between males and females accompanied by a dramatic reduction in the male-to-male conflict over mating and an increased investment in offspring. How such a transition from promiscuity to pair-bonding could be achieved is puzzlin...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gavrilets S

更新日期：2012-06-19 00:00:00

abstract：:The prefrontal cortex plays a fundamental role in the working memory functions of the cerebral cortex and is also the site of dysfunction in several neurological and psychiatric disorders, including schizophrenia. Prefrontal neurons are distinguished by their capacity for sustained activity during the time a stimulus ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gao WJ,Krimer LS,Goldman-Rakic PS

更新日期：2001-01-02 00:00:00

abstract：:U2 snRNP auxiliary factor 65 kDa (U2AF(65)) is a general splicing factor that contacts polypyrimidine (Py) tract and promotes prespliceosome assembly. In this report, we show that U2AF(65) stimulates alternative exon skipping in spinal muscular atrophy (SMA)-related survival motor neuron (SMN) pre-mRNA. A stronger 5' ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Cho S,Moon H,Loh TJ,Jang HN,Liu Y,Zhou J,Ohn T,Zheng X,Shen H

更新日期：2015-08-11 00:00:00